- update to libsodium26

- add crypto_kdf_derive.patch to fix crypto_kdf_derive_from_key() on 32-bit platforms
the new pack_nonce option allows for the nonce to be omitted
his release introduces the DualKey class, secure key saving and loading,
Dual Keys are classes which can encrypt and sign data. These classes generate
The original time nonce routine used the first 20 chars of the 24 char nonce for the microsecond
timestamp (based on salt's jid), leaving 4 chars for random data. This new nonce uses far fewer
chars for the timestamp by hex encoding the float of microseconds into just 13 chars,